I said above that the Histogram is a type of Bar Chart because they both use vertical bins to display data. Difference between a Bar Chart & Histogram In that way, the pattern of the variation within the data will become obvious! More on Distributions below. Which means that every piece of data that you collect will have variation in it, and this variation will exist in a “Pattern”.Īnd the best way to see or understand this Pattern of variation is to graph your data using a Histogram. Why would you want to graphically display data?īecause as a Quality Engineer you probably already understand that every process, product or service has variation. More specifically, a Histogram is a type of Bar Chart that graphs the frequency of occurrence of continuous data, and will aid you in analyzing your data.
A Histogram is a Quality Control Tool that graphically displays a data set.
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